You can probably drive the bolt back through the transom using a hammer or sledge hammer, and then a punch and a hammer. A hard strike should break it free from the epoxy. If it's truly a carriage bolt, you don't want to try to turn it. A carriage bolt has a round head and a square neck.
Alan Bergen 35 Mk III Thirsty Rose City YC Portland, OR On Tue, Jul 20, 2021 at 2:42 PM dwight veinot via CnC-List < cnc-list@cnc-list.com> wrote: > Can you just grind it away and leave it. > > On Tue, Jul 20, 2021 at 3:41 PM Bill Coleman via CnC-List < > cnc-list@cnc-list.com> wrote: > >> I have a Broken ¼ - 20 broken carriage bolt with around 2 threads showing >> out my transom. >> >> 1 ½” is embedded in epoxy. An easy-out seems unlikely. I did four, three >> of them unscrewed successfully, but apparently I didn’t coat this one >> thoroughly enough with the Vaseline. >> >> >> >> I am thinking that if I can heat the bolt up to around 300 degrees or so, >> it will break the bond with the epoxy. A soldering iron seems **maybe** >> possible, but that is only one side. I was wondering if I could heat it up, >> like plumbers do with welders to melt frozen water lines, it might be an >> option. >> >> But I don’t understand enough about electrical resistance to know how to >> go about it. Using a battery for juice seems risky, having seen what >> happens when I have shorted them out with a wrench – >> >> I do have a 30 amp adjustable Powerwerks power supply, which seems a >> little safer. >> >> What I don’t understand, is if I can put a positive on one end of the >> bolt, and negative on the other, will it heat the bolt, or will it just >> melt the insulation off the wires? Or ruin the power supply? Or is it a >> factor of the gauge of the wires? >> >> >> >> Bill Coleman >> >> Entrada, Erie, PA >> >> >> >> >> Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> <https://urldefense.com/v3/__https://www.paypal.me/stumurray__;!!LIr3w8kk_Xxm!61cXmQ3t_0HBAdnGhtRD8lgVwNjDVtT-8uqhtSM8F0aVJFfk5eDfhB2Km5s1TBL1Vk8$> >> Thanks - Stu > > -- > Sent from Gmail Mobile > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- > https://urldefense.com/v3/__https://www.paypal.me/stumurray__;!!LIr3w8kk_Xxm!61cXmQ3t_0HBAdnGhtRD8lgVwNjDVtT-8uqhtSM8F0aVJFfk5eDfhB2Km5s1TBL1Vk8$ > Thanks - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
